Thu, Oct 20, 2011 60 mins
Meredith is on the outs at the hospital, so she must enlist Lexie to get Derek interested in a brain-tumor case. Meredith also gives April advice in secret about Bailey's clinical trial. Meanwhile, Arizona and Mark have finally become friends, but that proves more annoying than helpful to Callie; Alex and Teddy research different surgeries for the same patient; and Callie and Cristina struggle with a tough spinal surgery. Guests stars include Lee Majors and Marilu Henner.